package chapter04.Example30;

public class Example30 {
    public static void main(String[] args) {
        int result = divide(4,-2);
        System.out.println(result);
    }
    public static int divide(int x,int y){
        if(y<0) {
            throw new DivideByMinusException("除数是负数");}
        int result = x/y;
        return result;

    }
}
